The Verge published a video demonstrating how desktop mode and Office 2013 - a desktop application - work on Windows RT, the ARM version of Windows 8. The video showed a desktop mode that clearly didn't work well for touch, and even Office 2013, which has a rudimentary touch mode built-in, didn't work properly either. It looked and felt clunky, often didn't respond properly, and even showed touch lag.

I would add to your list: create/support a usable desktop (like Cinnamon or Mate) or go back to something like KDE 3.5.
I will never stress that enough. The direction taken by the Linux Desktop has disgusted so many users.
But they said that users didn't matter, didn't they?